The main constituent of natural gas is: MCQ with Answer and Explanation

Explanation:
Sulphuric acid (H₂SO₄) was historically called oil of vitriol. Hydrochloric acid was muriatic acid, nitric acid was aqua fortis, carbolic acid is phenol.

Explanation:
In [Ni(CN)4]2-, Ni is in the +2 oxidation state (d8 configuration). CN- is a strong field ligand, causing the pairing of d-electrons. This leaves one empty d-orbital, leading to dsp2 hybridization. The geometry is square planar. Since all electrons are paired, the complex is diamagnetic.

Explanation:
Faraday's first law: m ∝ Q, where m = mass deposited, Q = charge passed (current × time). So mass deposited is directly proportional to the quantity of electricity (coulombs). While m ∝ I and m ∝ t individually are true for constant parameters, the exact law states m = ZIt = ZQ, where Z is electrochemical equivalent. The law directly links mass to Q. Faraday's second law deals with equivalent masses.